I think what your trying to say is the program only works in full screen so you can't access anything when in full screen mode? As guy said, find snagIt, then open and minimize it. Open your DOS game and when you are ready to take a snapshot while in fullscreen mode press ALT+Tab, a box will open while holding down ALT press tab key again till you have highlighted snag it to come in front of the full screen and take your best shot.